30 Linux Questions With Answers – Online Test for Geeks

Select the command to display the kernel release?

Select the command to list older files first and newer ones last?

Select the command to show process hierarchy in forest format?

Select the command to edit and run any command using its index from the history?

For example – Edit and run the 10th command.

Which of the following commands would you use to enable the sticky bit on the “/tmp” folder?

Some commands (including cat) interpret a minus sign (-) as a shortcut for which of the following?

If you want to display a message on opening a new terminal window, which file is to be modified?

What keyboard combination can be used to exit the shell?

Which of the following command would redirect the stdout and stderr to a single file?

How would you remove a directory that is not empty?

Select the correct meaning of the following command?

command 2> /dev/null

Select the command to determine the current login shell?

Select the correct command to switch to virtual terminal 1.

Select the command to display the running httpd processes.

Which of the following runs the last command you entered?

Select the command to provide the information about the identity, including the names of the group we belong?

Select the command to lock the user account named localusr.

Which file determines the run at each runlevel?

What is the symbolic representation of this numeric permission: 644?

Given a file with permission 755, which of the following commands would change file permission to r-xr–r–?

Select the command to show all the hidden directory contents.

To list the directory contents with permissions the command is?

Select the commands to shut down the machine.

Choose the command used to remove the password assigned to a group.

Suppose while working for another system administrator and one of the users asks you to restore a file for him. You locate the correct tar file by checking the backup log but do not know about the directory structure. Select the command to determine this?

Which password package secures the central password file from getting stolen?

Which of the following tasks is not done automatically for a user account created using useradd command?

What characteristic of the </etc/passwd> file does not allow to use the shadow passwords?

Which of the following options lists all the seven fields of the </etc/passwd> file in the correct order?

Which of the following files defines all users on a Linux system?